| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2325-04 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F12-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F12-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-20 |
| filingDate |
1990-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ffde47a6764594aa856b978c1b6bb01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b39ffac2046e4ce68b75418b82402e1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b60038964f3bad29e50d0cd88945e59d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e3bbaa3cc880bb8f945d43b5434b92a |
| publicationDate |
1990-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4980381-A |
| titleOfInvention |
Preparation of bead-form expandable styrene polymers |
| abstract |
Bead-form expandable styrene polymers are obtained by suspension polymerization of styrene with addition of from 1 to 10% by weight of C3- to C6-hydrocarbons as blowing agents and, if desired, customary additives, where (a) the polymerization is initiated by rapidly heating the polymerization batch to form 80 DEG to 90 DEG C. within a maximum of 2 hours, (b) subsequently allowing the reaction temperature to increase to from 120 DEG C. to 130 DEG C. by from 8 DEG to 17 DEG C. per hour, and (c) the conversion is formed 30 to 60% when 100 DEG C. is reached, and (d) the conversion is 80% or more when the maximum temperature is reached, and (e) the batch is subsequently kept at from 100 DEG to 130 DEG C. until the residual monomer content in the polymer has dropped to less than 0.1%. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100280214-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100280215-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6093781-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5455321-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5118718-A |
| priorityDate |
1989-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |